Article (Scientific journals)
A Realistic Mixture of Persistent Organic Pollutants Affects Zebrafish Development, Behavior, and Specifically Eye Formation by Inhibiting the Condensin I Complex
Guerrero Limon, Gustavo; Nivelle, Renaud; Nguyen, Bich Ngoc et al.
2023In Toxics, 11 (4), p. 357
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Keywords :
Chemical Health and Safety; Health, Toxicology and Mutagenesis; Toxicology; SVHC; persistent organic pollutants; PFOS; zebrafish development; behaviour; condesin I
Abstract :
[en] Persistent organic pollutants (POPs) are posing major environmental and health threats due to their stability, ubiquity, and bioaccumulation. Most of the numerous studies of these compounds deal with single chemicals, although real exposures always consist of mixtures. Thus, using different tests, we screened the effects on zebrafish larvae caused by exposure to an environmentally relevant POP mixture. Our mixture consisted of 29 chemicals as found in the blood of a Scandinavian human population. Larvae exposed to this POP mix at realistic concentrations, or sub-mixtures thereof, presented growth retardation, edemas, retarded swim bladder inflation, hyperactive swimming behavior, and other striking malformations such as microphthalmia. The most deleterious compounds in the mixture belong to the per- and polyfluorinated acids class, although chlorinated and brominated compounds modulated the effects. Analyzing the changes in transcriptome caused by POP exposure, we observed an increase of insulin signaling and identified genes involved in brain and eye development, leading us to propose that the impaired function of the condensin I complex caused the observed eye defect. Our findings contribute to the understanding of POP mixtures, their consequences, and potential threats to human and animal populations, indicating that more mechanistic, monitoring, and long-term studies are imperative.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Guerrero Limon, Gustavo  ;  Université de Liège - ULiège > GIGA
Nivelle, Renaud ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Gestion des ressources aquatiques et aquaculture
Nguyen, Bich Ngoc  ;  VNU School of Interdisciplinary Studies, Vietnam National University
Dinh Duy Thanh  ;  Université de Liège - ULiège > GIGA
Muller, Marc  ;  Université de Liège - ULiège > Département des sciences de la vie
Language :
English
Title :
A Realistic Mixture of Persistent Organic Pollutants Affects Zebrafish Development, Behavior, and Specifically Eye Formation by Inhibiting the Condensin I Complex
Publication date :
09 April 2023
Journal title :
Toxics
eISSN :
2305-6304
Publisher :
MDPI AG
Volume :
11
Issue :
4
Pages :
357
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
H2020 - 722634 - PROTECTED - PROTECTion against Endocrine Disruptors; Detection, mixtures, health effects, risk assessment and communication.
Name of the research project :
PROTECTion against Endocrine Disruptors
Funders :
Union Européenne [BE]
Funding number :
722634
Funding text :
This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Innovative Training Network (ITN) program PROTECTED, Grant agreement No. 722634.
Available on ORBi :
since 13 April 2023

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